(set-option :incremental false)
(set-info :status unsat)
(set-logic QF_BV)
(declare-fun x () (_ BitVec 32))
(declare-fun y () (_ BitVec 32))
(declare-fun z () (_ BitVec 32))
(declare-fun w () (_ BitVec 32))
(assert (= x y))
(assert (= y z))
(assert (= z w))
(check-sat-assuming ( (not (= x w)) ))
